Heat source probe for measuring thermal conductivity in waste rock dumps.
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Date
1985-10
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Australian Atomic Energy Commission
Abstract
The development and use of a heat source probe to measure the thermal conductivity of the material in a waste rock dump is described. The probe releases heat at a constant rate into the surrounding material and the resulting temperature rise is inversely related to the thermal conductivity. The probe was designed for use in holes in the dump which are lined with 50 mm i.d. polyethylene liners. The poor thermal contact between the probe and the liner and the unknown conductivity of the backfill material around the liner necessitated long heating and cooling times (>10 hours) to ensure that the thermal conductivity of the dump material was being measured. Temperature data acquired in the field were analysed by comparing them with temperatures calculated using a two-dimensional cylindrical model of the probe and surrounding material and the heat transfer code HEATRAN.
Description
Keywords
Heat transfer, Measuring instruments, Solid wastes, Thermal conductivity, Cooling, Pyrite, Waste-rock interactions
Citation
Blackford, M. G., & Harries, J. R. (1985). A heat source probe for measuring thermal conductivity in waste rock dumps (AAEC/E609). Lucas Heights N.S.W.: Australian Atomic Energy Commission, Research Establishment.